Zekkyou on 05 November 2014
I assume the reason for the downward adjustments (despite us knowing both the PS4 and X1 need to be boosted up) is that ioi wants the weekly and regional data to be as accurate as possible. If he's sure one place is over tracked, but is likewise not sure where the missing sales should be, then a seemingly illogical adjustment is inevitable.
VGC sometimes ignoring (or only particularly acknowledging) NPD data somewhat contradicts that theory though. Maybe he's just high and/or fucking with us 
